Resumo

AGUILAR ARMENTA, Gelacio  e  PATINO IGLESIAS, María Eugenia. Erionita premodificada con K⁺ y zeolita 4A para la adsorción de propano y propileno. Rev. Soc. Quím. Méx [online]. 2001, vol.45, n.2, pp.60-65. ISSN 0583-7693.

In this work, the adsorption uptake at t ≥ 20 °C of propane and propylene in natural zeolite ZAPS (erionite) and in K⁺-exchanged sample (ZAPS-K) was determined. Adsorption equilibrium isotherms and adsorption kinetics were carried out in a glass high-vacuum volumetric system, which was equipped with grease-free valves. It was established that the adsorption uptake of C₃H₆ in ZAPS sample was greater than that for C₃H₈, because of the contribution of ϖ-bonds to the total interaction energy. The adsorption capacity of ZAPS-K sample was lower than that of ZAPS. Unlike the ZAPS sample, the adsorption uptake of both hydrocarbons in ZAPS-K sample and for C₃H₆ in 4A increased with increasing temperature.

Palavras-chave : Adsorption isotherm; adsorption kinetics; erionite; propane; propylene.